Supplier Code of Conduct: Building Resilient Supply Chains Through Responsible Partnerships
Strong supply chains are built on more than quality and reliability. They also depend on shared expectations, transparency and responsible business practices across every stage of the value chain. A supplier code of conduct can provide a common framework for organisations and suppliers to work towards these goals while strengthening long-term collaboration.
At MM, supplier engagement forms part of a broader approach to responsible sourcing, ESG management and circularity. By working closely with business partners, the Group aims to encourage consistent standards across its value chain while supporting customers in addressing sustainability-related requirements through a practical and collaborative approach.
How a supplier code of conduct can support responsible sourcing
A company code of conduct can help establish clear expectations on topics such as human rights, labour standards, environmental management, business ethics and legal compliance. Rather than acting as a one-off requirement, it can create a shared foundation for continuous dialogue between organisations and suppliers.
This approach aligns with MM’s wider governance framework, where responsible sourcing and supplier engagement are integrated into its sustainability strategy. The Group also works with suppliers to improve transparency across the value chain and progressively expand ESG engagement and assessment activities.
Further information is available in the MM Supplier Code of Conduct, alongside MM’s wider Code of Conduct Policies.
How a supplier code of conduct can encourage supplier engagement
Building long-term value through collaboration
Responsible procurement extends beyond supplier selection. Regular dialogue, performance reviews and shared expectations can help organisations identify opportunities for improvement while strengthening business relationships over time.
As part of its sustainability strategy, MM is engaging key suppliers on ESG topics and increasing the use of primary supplier data to improve understanding of value-chain impacts. These activities form part of the Group’s long-term approach to responsible sourcing and decarbonisation and may contribute to more informed decision-making across the supply chain.
Organisations looking to strengthen supplier relationships may also benefit from integrating supplier engagement into wider governance and sustainability programmes, rather than treating compliance as a standalone exercise.
How a supplier code of conduct can strengthen supplier compliance
Supporting continuous improvement across the value chain
Effective supplier compliance with a code of conduct policy is built on transparency, consistency and ongoing engagement. A clear code of conduct policy can help suppliers understand expectations while creating a structured basis for monitoring progress over time.
Within MM’s sustainability framework, supplier engagement is complemented by broader objectives that include increasing ESG assessments of key suppliers and encouraging suppliers to acknowledge the MM Supplier Code of Conduct as part of responsible business relationships. These activities reflect MM’s approach of working collaboratively with suppliers and customers in response to evolving sustainability-related expectations.
Frequently asked questions on the supplier code of conduct
A supplier code of conduct outlines the standards that organisations ask suppliers to follow when doing business together. It typically covers topics such as ethical business conduct, human rights, labour practices, environmental management and legal compliance, helping establish a consistent framework across the supply chain.
Supplier compliance can help organisations promote consistent standards throughout their supply chains. Combined with regular engagement and transparent communication, it may support better risk management, strengthen supplier relationships and help organisations respond to evolving customer and regulatory expectations.
A code of conduct policy can provide a common framework for responsible sourcing by setting expectations for environmental, social and governance practices. When combined with supplier engagement, it may support continuous improvement and greater transparency across the value chain.
MM’s Annual Report 2025 describes supplier engagement as part of its wider sustainability strategy. This includes ESG assessments, responsible sourcing activities, supplier data collection and collaboration to improve understanding of value-chain impacts while supporting long-term decarbonisation objectives.
A company code of conduct can help create a shared understanding of business expectations between organisations and suppliers. Supported by ongoing dialogue and regular reviews, it may contribute to stronger business relationships and continuous improvement over time.
